Lip turning machine



May 10, 1932. H. E. DOW 1,857,366

LIP TURNING AHINE Filed June 4, 1929 48 42 T1811, m T1812 Patented May 10, 1932 UNITED STATES PATENT OFFICE Y 7 HARRY E. DOW, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED MACHIN- ERY CORPORATION, OF PATER SON, NEW JERSEY, A CORPORATION OF NEW JERSEY LIP TURNING- MACHINE Application filed June 4, 1929. Serial No. sss,25s.

type.

A Well-known machine for opening the channels 0'! welt shoes cnmnrises a vertical shaft to aline the shafts accurately during the setting up of the machine. The flexibility of the coupling insures that any subsequent slight disalinemjent of the shafts, such as might occur during continued use of the machine, Will not result in cramping either shaft. I

in its own bearings.

In the illustrated machine the lip turning tool is screwed upon the end of the toolshaft to nrovide for firm attachment of thetool and an tool. The shaft 14 is journaled in radial ball bearings 18 and 20 carried by a housing 22, the bearing 20 serving also as a thrust bearingto support the weight of the shaft 14. The shaft'14 projects a short distance below the bottom of the housing 22 to enable a rotary guard roll 24 to be mounted upon the projecting end of the shaft between the tool 10 and the lower end of the housing.

' The housing 22 is formed. at the outer end of an upwardly and forwardly curved hollow arm or head 26 of goose-neck form which sur- "mounts a hollow pedestal 28 and which, to-

gether with the pedestal, constitutes the frame of the machine. As shown, a reduced lower extremity 30 of the arm or head 26 is received in'the split upper end of thepedestal 28 and is securely held in place by means of a clamp bolt 32 arranged to contract the split end of the pedestal. By loosening the bolt 32, the horizontal angular position of the arm 26 may be adjusted to suitthe convenience ofthe operator without the necessity of moving the relatively heavy pedestal 28. I I The lipturning tool 10 's driven by an electric motor 36 having an armature shaft 38 which is directly connected, by means of a flexible coupling 40, with the tool shaft 14. The 'motor 36 is supported by the head26. themotor casing being bolted to a plate 42 carried by a bracket 44 which, in turn, is se-v cured to the head.- The plate 42 and the bracket 44 are constr-ucted'andarranged to facilitate an initial or setting up adjustment of the motor to position its shaft in accurate axial alinement with the tool shaft before the shafts are coupled together and'the motor isfixedly secured to the frameof the machine. The use of the flexible coupling 40 insures against interruption in the smooth running of the machine in the event that continued use of the machine should result in slight disalinement of themotor and tool shafts.

As herein shown, the motor 36 is secured to the plate 42 by bolts 46"which extend through apertured lugs 48 on the motorfcasing and through vertically elongated slots 50 (Fig. 3) in the plate 42 the plate 42 is secured to the vertical arm of the bracket 44 by bolts 52 which extend through horizontal slots 54 in the plate 42 and through vertical slots 56in the bracket; and the bracket 44 is secured to the head 26 by screws 58 which extend through horizontal slots 60 in the horizontal arm of the bracket and are threaded into the head 26. When the bolts 58 are loosened, the slots 60 permit forward and backward adjustment of the motor while adjustment of the motor from side to side is permitted by the slots 54 in the plate 42 when the'bolts 52 are loosened. 'Vertical adjustment of the motor is permitted by the vertical slots 56 in the bracket 44. This construction enables the motor to be readily adjusted in all directions necessary to position the lower end of the motor shaft in alinement with the upper end of the tool shaft, such positioning being accurately effected by the use of one member of the coupling 40 as will be hereinafter fully explained. Thereafter, when all of the bolts are tightened the retaining of the motor withlits shaft in alinement with the vertical tool shaft is insured by careful machining of the contacting surfaces of the head 26;.the bracket 44, the plate 42 and the motor casing 36; the surfaces on the vertical and horizontal arms of the bracket being accurately disposed at an angle of 909. The slot-s50 in the plate 42 enable motors of different sizes to be interchangeably mounted upon thehead 26.

The flexible coupling40 comprises an up,- per member 64 for attachment to the motor shaft 38, a lower member .66 for attachment to the tool shaft 14, and a flexible washer 68, ofleather or other suitablematerial, which is interposed between the members 64 and 66 and is received in countersunk recesses in each member. The two coupling members 64, '66 are connected together through the washer 68 by means of pins 70 carried by the member 66 which enter apertures in the washer, and pins 72 carried by the member 64'which enter similar apertures in the washer 68. The coupling member 64 is secured to the shaft 88 by means of a set screw 74 while the coupling member 66 is secured to the tool shaft 14 by aset screw 76.

In assemblingthe motor 36 with the other parts of the machine the motor is first bolted securely to theplate 42 after which the bolts 52 and screws 58 are put in place to secure the plate 42 to the bracket 44 and the bracket 44 to the head 26, said bolts and screws being left untightened, however. to permit relative movement to take place between the connected 7 parts as maybe required for the purpose of adjusting the motor with its shaft in accurate alinement with the tool shaft. At this stage of the setting up operations the weight of the motor is supported by the tool shaft. the lower end of the motor shaft resting upon the upper end of the tool shaft and the coupling members64 and 66 being loosely assembled upon their respective shafts. Before the set screws 74 and 7 6 are tightened to secure the coupling-members in place the coupling adjusted to'secure initial alinement of the motor 11' and tool'shafts. For this purpose the coupling members are raised above their normal positions until the upper portion of the central recess in the lowerwmember 66 extends beyond the upper end of the tool shaft so that the walls of the recess embrace the lower end of the motor shaft, thus accurately alining the two shafts. While the two shafts 14 and 38 are maintained in alinement by the coupling member 66 the bolts 52 and the screws 58 are tightened and, inasmuch as the attaching surfaces on the bracket 44, the plate 42 and the head 26 are accurately machined to insure positioning of the motor with its axis vertical, the motor will be firmly secured in place with its shaft positioned inaccurate axial alinement withth e, vertical tool shaft 14. Thereafter, the coupling members 64: and

66 are readjusted into the positions shown in Fin- 9. and flan not. qnrnwq '74 nnrl l'ti mm Hold...

against the downward thrust of the tool shaft. I

In the use of the machine it is often desirable to changethe lip turning tool 10 for a tool of a different size or shape according to a the character of the work to be done. Inasmuch as the tool 10 is screwed upon the tool shaft it is necessary, for the purpose of removing the tool or replacing it upon the shaft, to hold the shaft from turning while thetool is being turned in one direction or the other relap tively to the shaft. However, in, the present construction, inasmuch as the tool shaft 14 is entirely enclosed within the housing 22 (with the exception of the lower portion of the shaft which is entirely surroundedby the guard rnll 9.43 smrlinacmimlw as Hm mntm" .Qlmfi'fis a position overlapping the adjacent portions thereof to insure accurate initial alinement of the shafts, and bearings for said ad acent shaft portions spacedapartto permit said adjustment of said coupling member;

2. A lip turning machine comprising, in

combination, a vertical tool shaft, a lip turning tool secured to the lower end ofthe tool shaft, an electric motor located above the 7 tool shaft, a flexible coupling connecting the tool shaft and the motor shaft, said coupling comprising a member having anopening enclosing the coupling and adapted to be removed to permit adjustment of said coupling member into said shaft alining position.

3. A lip turning machine comprising,in combination, a tool shaft. an electric motor arranged with one end ofits shaft adjacent to one end of the tool shaft,,a lip turningtool secured to the other end of the tool shaft, a flexible coupling adapted to be manipulated to effect accurate initial alinement of said shafts'and to be readjusted to connect said shafts flexibly to allow for subsequent disalinement of the shafts, a frame comprising a housing for-the tool shaft and the coupling, the housing having a separable portion adapted to be removed to afford access to the coupling to facilitate its manipulation in setting up the machine, and adjustable means connected with the frame for supporting the motor. V

4. A lip turning machine comprising, in combination, a frame. a shaftjournaled in vertical bearings in said frame. a lipturning tool fixed on the lower end of said shaft, a

bracket-secured to-said frame with provision for horizontal adjustment, a plate supported ina vertical plane by said bracket and securedto the bracket with provision for ad justment relatively to the bracket both vertically and horizontally, the plate being fitted for attachment to electric motors of different sizes, an electric motor secured to said plate with its shaft alined with the tool. shaft, and a coupling connecting the motor shaft and the tool shaft.

5. A lip turning machine comprising, in combination, a pedestal, a goose-neck frame secured at its lower endto the top of the pedestal with provision for rotative adjustment about the axis of the'pedestal, vertically alined shaft bearings at the outer end of said frame, a tool shaft journaled in said;

bearings and arran ed with its upper end housed within said rame and its lower end projecting-below the frame, a lip turning tool secured to the projecting end of the tool shaft, a motor located above the frame and having one end of its shaft housed within said frame, means carried by the frame for supporting the motor with its shaft in alinement with the tool shaft,said means being constructed and arranged to permit adjustment of the motor in all directions to facilitate alinement of the motor shaft and the tool shaft, and a coupling connecting the adj acent ends of said shafts.

6. A lip turning machine comprising, in combination, a vertical tool shaft, a frame, a radial bearing in said frame for the upper end of the tool shaft, a combined radial and thrust bearing in said frame for the lower portion of the tool shaft, a lip turningtool secured to the shaft below said thrust bearing, a guard roll on said shaft above the lip turnin tool, and means detachably secured to the rame between the guard roll and the thrust bearing constructed and arranged to support said bearing, said means being in the form of a cup arranged to receive oil from said bearings and thereby to prevent the oil from reaching the guard roll and the lip turning tool.

7. A lip turning machine comprising, in combination, a lip turning tool, a tool shaft, a housing for said shaft,'vertically spaced bearings in the housing in which said shaft is journalled, an electric motor having an armature shaft projecting into said housing, a flexible couplingfor connecting said shafts comprising separable members adapted to be manipulated to effect initial alinement of the shafts, a cap for said housing adapted to be readily removed to facilitate manipulation of said coupling member, an oil cup formed in said removable cap, and a passage in said housing constructed and arranged to receive oil from said cup and lead it to the uppermost of said bearings.

8. A lip turning machine comprising, in combination, a. frame, a housing supported by the frame, a tool shaft j ournaled within the housing and having an aperture extending diametrically therethrough, said shaft having one end portion projecting beyond the housing, an electric motor mounted upon the frame and having its shaft coupled to the tool shaft, a thrust bearing for'said shaft, a rotary guard roll on the projecting portion of the tool shaft, a lip turning tool screwthreaded upon said projecting portion of the tool shaft beyond said guard roll, a locking bolt mounted in said housing and adapted to be manually projected into and to fit closely within either end of said aperture in the tool shaft to hold the shaft against turning and against endwise' displacement to relieve said thrust hearing from excessive thrust resulting from attachment or removal of said tool and said guard roll, and a spring for retracting the locking bolt to release the shaft.

In testimony whereof I have signed my name to this specification.

HARRY E. DOW. 

